William white



(No Model.)

W. WHITE.

OENTRIFUGAL AMALGAMATOR.

No. 399,590. Patented Mar. 12. 1889.

z WITNESSES. I 4

M) II ATTORNEY,

rrnn hr WVILLIAM IVHITE, OF MOUNT VERNON, ASSIGNOR TO JAMES BREYVSTER AND RICHARD KELLEY, OF NEW YORK, N. Y.

C ENTRI FU GALAMALGAMATO R.

SPECIFICATION forming part of Letters Patent No. 899,590, dated March 12, 1889.

Application filed November 22, 1888. Serial No. 291,546. (No model.)

To all whom it may concern.- also provided with a series of pins, G lying Be it known that I, \VILLIAM XVI-UTE, a citi' between the opening and riffs aforesaid. The zen of the United States, and a resident of pins G are fixed to a bar, G, and said bar is Mount Vernon, in the county of 'estchester suitably secured to the under side of the disk.

and State of New York,have invented certain Each pin is practically wedge shape in crossnew and useful Improvements in entrifugal section. A top circular plate or cover, 11, is Amalgamators, of which the following is a fixed at its outer edge to the outer edge of the specification. disk G. The plate II is provided with a cen- This invention relates to cmitrifugal amaltral opening, in which is mounted a bowl- IO gamators, and its object is to improve the shaped hopper, I, and I a removable cap construction shown and described in my two for said hopper, this cap being provided with Letters Patent ol' the United States, No. a mouth or side opening, 355,958, granted January 11, 1887, and No. J .l" are two screens fixed within the hopper 368,363, granted August 1.6, T1887; and it (:on- I and lying parallel, the upper. screen being I5 sists in the parts which will be ln'n-einafter coarserthantheloweronc. A vent-tube,K,is specified, and pointed out in the claims. fixed in openings in the plate II and disk G, so

Reference is to be had to the accompanying that the lower end of the tube comm unicates drawings, formin part of this specification, with the space between the pan and disk, while in which similar letters of reference indicate the upper end thereof opens into the space 20 corresponding parts in all the views. above the plate II, and said upper end is pro- Figure 1 represents a central sectional ele vided with an enlarged part, K, in which is vation of the a1nalgamator. Fig. 2 is a plan fixed a conical hood, K so as to leave an airview of the revoluble pan. Fig. 3 is a botspacebctween said enlarged part and hood, as tom plan view of the stationary disk, and Fig. indicated by the arrows in Fig. 1.. Any desired 25 dis an enlarged detail. perspective view of the number of these tubes may be employed. 75

disk-pins and thebar to which they are fixed. Only one, however, is shown.

A revoluble pan, A, is rigidly secured to the The disk G, and parts connected thereto, upper end of a vertical shaft, 13, said shaft are adjustably supported by columns L, which being provided witha bevel-gear, 3. Ahoricarry upwardly-extending threaded stand- 30 zont-al. shaft, 0, is provided on its inner end ards M, that pass through apertures formed with. a lmvel-gear, O, which meshes with the in arms i that are rigidly connected to the gear ll, the outer end of the shaft 0 being disk plate or cover .l l, while the columns L provided with a pulley, l). The pan A aforecarry hinged eyebolts O, that may be turned said is mounted on a frame, E, the inner part up to enter slots formed in the ends of the 35 of said frame being provided witha collar, E, arms N. The threaded standards M carry which is fixed to the upper part of the shaft nuts P, which may be turned up or down to B. The upper face of the pan A is provided vary the distance between the pan and disk, with a series of concentric steps, A, the outer and a proper adjustment having been obpart of the pan beyond the last step being tained the disk is locked by turning down 40 inclined slightly upward and terminating in nuts Q, that are carried by the bolts 0, as a downwardly-curved peripheral edge, A as shown in Fig. 1. In practice three of the colshown in Fig. 1. The upper face of the pan umns L are preferably employed. is also provided with a cone or taperin g block, The operation of the invention is as follows:

F, centrally fixed thereto. There is a dis- The ore or pulpisfed into the hopper through 45 charge-pipe, F, in the bottom of the pan, the mouth 1 the face of the pan having been through which the amalgam maybe drawn off. previously charged with mercury. The said A convexed stationary disk, G, is mounted ore then passes through the screens, and above the pan A, said disk being provided thence onto the cone or tapering block F, and with a central opening, g, and witha series of thence onto the rotary pan. The cone F 50 concentric riffs, G, arranged to break joint; causes the ore to spread outward away from I00 the center of the pan to a point where the centrifugal force will be sufiicient to act on the ore, causing it to move outward over the face of the pan in a rotary spiral course. The disk-pins serve to separate the pulp into small particles, so as to expose the gold and cause it to unite with the mercury, and the breakjoint riffs also serve to effect an agitation and separation of the pulp for a like purpose.

The vent-tubes K serve to prevent a vacuum between the disk and pan, and the conical hood K in the upper part of each tube serves to prevent any water or pulp from passing upward and out of said tube.

The pins G are set so that they present a wedge-shaped edge to the line of travel, thereby causing an effectual chopping or separation of the pulp.

Having thus described my invention, I claim as new and desire to secure by Letters Patent of the United States 1. In a centrifugal amalgamator, the combination, with the frame, of the pan mounted on said frame and formed with a series of concentric steps the outer part of which beyond the last step is inclined upwardly and terminates in a downwardly-curved peripheral edge, substantially as shown and described.

2. The combination, with the frame, the'rotary pan, the disk above the pan, and the plate secured at its outer edges to the said disk, with a space between the pan and disk, of the vent-tube K, extended through the plate and disk and communicating at its lower end with the space between the pan and disk, and through the plate and provided at its upper end with an enlargement, and the conical hood in said enlarged part with an air-space around the same, substantially as and for the purpose specified.

Signed at New York, in the county of New York and State of New York, this 18th day of October, A. D. 1888.

WVILLIAM WVHITE.

Witnesses:

FRANK A. Fours, LEWIs L. PIERCE. 

